the law of inverse ninjas

The law of inverse ninjas, also known as the law of conservation of
ninjitsu, is an empirical observation that arises from seeing martial
art action sequences in any number of movies. It was first described in Sir William Rowan Brawlington's groundbreaking work from 1896, entitled On Niponese Gluteal Bastement. Sir Brawlington, a learned man much ahead of his time, also noticed the phenomemon that today we know as the stormtrooper effect. As we all know, the effort to fully unify both phenomena remains an active area of research in the field of geeky nitpickery. Modern evidence for
confirmation of the law of inverse ninjas will be given shortly.

The law can be best stated in conservative form as follows: "In any
given opposing team of evil ninjas, total ninjitsu is conserved."
Thus, we have inverse variation, and the more evil ninjas in the opposing team, the less ninja skill
each one has individually. Mathematically,

s = N/t

where s is the individual ninja skill of each team
member, t is the total number of ninjas, and N
is the ninjitsu constant.

The upshot of all of this is that while it's easy for a single person
to take out 88 crazy ninjas, one-on-one ninja battles are much more
difficult and dramatic.

The Bride in Kill Bill whoops everyone's ass, but it's easier
when there are more asses to whoop.

The multitude of viral Agent Smiths in Matrix
Reloaded can't offer much of a fight (and fall like bowling
pins). Becoming aware of this, for the final fight Agent Smith
decides to go solo and offering a much better show, winning by
ninjitsu but killed by stupidity (and evil mastermind monologue syndrome).

The conservation of ninjitsu is so strong that entire genres of
video games can be built around it. In the late 80's up until the
mid 90's the so-called beat-em-up variety of video games was popular
with representatives such as Final Fight and Double Dragon (why,
oh why, did they make that movie out of it?).

And finally for now, inverse ninja reactions can also be observed
even in Disney classics such as the Lion King when Rafiki proves
his kung-fu is stronger than the hyenas' kung fu or in Shrek when
the Princess what's-her-face demonstrates that with a little
preservation of ninjitsu, even a babe in a form-fitting dress can
take out a band of marauding ruffians.